package com.itheima.reggie.common;


import com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;
import lombok.extern.slf4j.Slf4j;
import org.apache.ibatis.reflection.MetaObject;
import org.springframework.stereotype.Component;

import java.time.LocalDateTime;

/**
 * 自定义元数据对象处理器,
 * 拦截插入和更新操作,并自动调用 MyMetaObjectHandler 实例上的适当方法来填充常见字段
 * 相应自动填充的属性上在实体类里要加注解TableField(fill = )
 */

@Slf4j
@Component
public class MyMetaObjectHandler implements MetaObjectHandler {
    /**
     * 插入操作自动填充
     * @param metaObject
     */
    @Override
    public void insertFill(MetaObject metaObject) {
        log.info("公共字段自动填充 [insert]...");
        log.info(metaObject.toString());

        metaObject.setValue("createTime", LocalDateTime.now());
        metaObject.setValue("updateTime", LocalDateTime.now());
        metaObject.setValue("createUser",BaseContext.getCurrentId() );
        metaObject.setValue("updateUser",BaseContext.getCurrentId());
    }

    /**
     * 更新操作自动填充
     * @param metaObject
     */
    @Override
    public void updateFill(MetaObject metaObject) {
        log.info("公共字段自动填充 [update]...");
        log.info(metaObject.toString());
        metaObject.setValue("updateTime", LocalDateTime.now());
        metaObject.setValue("updateUser",BaseContext.getCurrentId());

    }
}
